Pacific Coast Theater of the American Civil War

Target entity: Pacific Coast Theater of the American Civil War
Context triple: [Union Army campaigns, location, Pacific Coast Theater of the American Civil War]

• A. Western Theater of the American Civil War
  The Western Theater of the American Civil War was the major military region west of the Appalachian Mountains where Union and Confederate forces fought pivotal campaigns for control of the Mississippi River and the heartland states.
• B. Puget Sound War
  The Puget Sound War was an 1855–1856 armed conflict in the Washington Territory between several Native American tribes and United States settlers and military forces over land, treaties, and sovereignty.
• C. Californian campaign of the Mexican–American War
  The Californian campaign of the Mexican–American War was the series of military operations in 1846–1847 through which United States forces seized control of Mexican Alta California, paving the way for California’s eventual annexation.
• D. Eastern Theater of the American Civil War
  The Eastern Theater of the American Civil War was the primary region of conflict in the eastern United States, encompassing major campaigns and battles between Union and Confederate forces in and around Virginia, Maryland, and Pennsylvania.
• E. Gulf Coast theater of the Mexican–American War
  The Gulf Coast theater of the Mexican–American War was the campaign zone along Mexico’s eastern coastline where U.S. forces launched amphibious assaults and inland advances, including the pivotal operations against Veracruz, to penetrate and occupy central Mexico.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Pacific Coast Theater of the American Civil War
Target entity description: The Pacific Coast Theater of the American Civil War encompassed the largely peripheral but strategically important military and naval operations along the western seaboard and adjacent territories, focused on protecting Union interests, communications, and resources far from the main eastern battlefronts.

• A. Western Theater of the American Civil War
  The Western Theater of the American Civil War was the major military region west of the Appalachian Mountains where Union and Confederate forces fought pivotal campaigns for control of the Mississippi River and the heartland states.
• B. Puget Sound War
  The Puget Sound War was an 1855–1856 armed conflict in the Washington Territory between several Native American tribes and United States settlers and military forces over land, treaties, and sovereignty.
• C. Californian campaign of the Mexican–American War
  The Californian campaign of the Mexican–American War was the series of military operations in 1846–1847 through which United States forces seized control of Mexican Alta California, paving the way for California’s eventual annexation.
• D. Eastern Theater of the American Civil War
  The Eastern Theater of the American Civil War was the primary region of conflict in the eastern United States, encompassing major campaigns and battles between Union and Confederate forces in and around Virginia, Maryland, and Pennsylvania.
• E. Gulf Coast theater of the Mexican–American War
  The Gulf Coast theater of the Mexican–American War was the campaign zone along Mexico’s eastern coastline where U.S. forces launched amphibious assaults and inland advances, including the pivotal operations against Veracruz, to penetrate and occupy central Mexico.
• F. None of above. chosen